问题

the time humankind started gardening, we _____to make our environment more beautiful.

A:try
B:have been trying
C:are trying
D:will try;

正确答案是：

同类题型

Excuse me, I’d like two _______.

Is the tall man over there our English teacher— No, it be him. He has gone to Shanghai to attend a meeting.

He _________ harder this year than last year

How is your new bB.might C.mustn’tD. should

Imperfect goods are________by our quality control center in case they come into the consuming of the customers.